Ålhus is a small village in the municipality of Sunnfjord in Vestland county, Norway. It is located along the European route E39 highway on the northern side of the lake Jølstravatnet, in a largely agricultural area. Ålhus is located about 15 kilometres (9.3 mi) west of the villages of Helgheim and Skei and about 8 kilometres (5.0 mi) northeast of the villages of Vassenden and Langhaugane.

Ålhus is the millennium site of Jølster, due to its historical significance. Audun Hugleiksson erected a stone castle called Audunborg here in the 13th century. Ålhus Church, the oldest church in the municipality, is also located here. Nikolai Astrup, the famous Norwegian painter, grew up here.